Scavenger roll



Dec. 28, 1954 s. E. NICHOLS ET AL 2,697,906

SCAVENGER ROLL Filed June 23, 1952 STANHOPE E. NICHOLS, arm/ROBERT C1. IERv/s.

ATTORNEYS United States Patent SCAVENGER ROLL Stanhope E. Nichols and Robert G. Jervis, Swannanoa, N. C.

Application June 23, 1952,, Serial No. 295,030

Claims. (Cl. 57-34.5)

This invention relates to yarn processing machinery and, more especially, to an improved scavenger roll structure for spinning frames and the like.

It is the primary object of this invention to provide a scavenger roll which is adapted to be mounted between each delivery roll of a spinning frame or the like and the spindle, and which is so constructed as to insure that the broken ends of yarn will be ensnared thereby and wrapped around the same and from which the convolutions of yarn wrapped therearound maybe quickly removed with a minimum of effort on the part of the operator.

More specifically, it is an object of this invention to provide an improved scavenger roll for spinning frames and the like comprising a frustro-conical body member adapted to be fixed on a driven scavenger roll shaft and which is provided with longitudinally extending rows of bristles therearound, each row of bristles being arranged at a slight angle relative to the longitudinal axis of the body or spirally on the body and each group of bristles in each row projecting from the body at an acute angle relative to the axis of the body and relative to the smaller end of the frustro-conical body.

Thus, upon the yarn end becoming broken, the bristles on the scavenger will ensnare the yarn end in such a manner as to insure that it is retained by the improved scavenger roll as the scavenger roll rotates on the driven shaft. The frustro-conical shape of the body of the improved scavenger roll facilitates ease in removal of the convolutions of yarn wound about the scavenger roll. Since the bristles also extend at an acute angle relative to the smaller end of the scavenger roll, this further facilitates ease of removal of the convolutions of yarn from the improved scavenger roll.

Some of the objects of the invention having been stated, other objects will apear as the description proceeds, when taken in connection with the accompanying drawings, in which- Figure 1 is a fragmentary elevation showing a portion of a spinning frame or the like with the improved scavenger roll mounted thereon;

Figure 2 is a fragmentary, somewhat schematic, vertical sectional view taken substantially along the line 22 in Figure 1;

Figure 3 is an enlarged isometric view of the improved scavenger roll showing a portion of the shaft on which it is mounted;

Figure 4 is an enlarged end view of the improved scavenger roll, showing the shaft on which it is mounted in cross-section.

Referring more specifically to the drawings, the numeral indicates one of the end frame members of a spinning frame or the like. The improved scavenger roll is shown in association with a wool spinning machine, since scavenger rolls are most generally used on this type of machine. However, it is evident that the scavenger roll may be used in association with many other types of textile machines such as twisters, cotton spinning machines or any other types of machines wherein strand material passes from drawing rolls to a take-up means such as bobbins or the like.

The end frame member 10 supports corresponding ends of a longitudinally extending roll stand beam or frame member 11 and a bolster rail or spindle rail 12. The beam or frame member 11 supports a plurality of delivery roll stands 13, only one of which is shown in Figure 1 and another which is shown in Figure 2. As is well known, these delivery roll stands 13 are spaced longitudinally on the beam 11. The roll stands 13 support at least one delivery roll 14 which, as shown in Figures 1 and 2, is provided with a plurality of longitudinally spaced fluted bosses 15 thereon.

The delivery roll 14 also extends into the frame member 10 wherein a suitable driving means, not shown, but being well known to those familiar with the art, is disposed for driving the delivery roll 14. The rear surfaces of the fluted bosses 15 are engaged by pressure rolls or drawing rolls 16.

The drawing rolls 16 are rotatably mounted in suitable brackets 17 Which are urged forwardly, by conventional means, not shown, to cause the drawing rolls or pressure rolls 16 to ride against the fluted bosses 15. Yarns Y pass downwardly from a suitable source, not shown, between the bosses 15 and the corresponding pressure rolls 16 and from whence the yarns pass through suitable yarn guides 20 supported by the beam or frame member 11.

The yarns Y then extend downwardly to suitable take-up means shown in the form of bobbins, spools or quills. 21. Each of the bobbins 21 is supported on a spindle 22 driven by a driven band or belt 23. The spindles 22 are carried by bolsters 24 fixed to the spindle rail 12, as is well known. Spaced below and inwardly of the delivery roll 14 is a scavenger roll shaft 25 Which is rotatably mounted in the roll stands 13. This shaft 25 is driven by a gear 26 fixed thereon which meshes with a gear 27 fixed on the driven delivery roll 14.

The parts heretofore described are the usual parts of a spinning frame and it is with these parts that the improved scavenger roll structure is adapted to be associated.

The improved scavenger roll comprises a circular tapered body or frustro-conical body 30 which is suitably se cured to the scavenger roll shaft 25, there being one of the improved scavenger rolls disposed between each of the bosses 15 on the delivery roll 14 and the bobbin or take-up means 21. The frustro-conical body 30 of each of the scavenger rolls has a plurality of relatively small groups of bristles 31 suitably embedded therein and which are arranged in helical or spiral rows extending generally longitudinally of the axis of the corresponding frustro-conical body 30.

In this instance, there are three groups of the bristles 31 shown in each of the substantially longitudinally extending rows of groups of bristles and the groups of bristles in adjacent rows are preferably staggered. Each row of bristles 31 may also be termed as being arranged at a slight angle relative to the longitudinal axis of the frustro-conical body 30.

Each group of bristles 31 may be secured in suitable bores in the periphery of the frustro-conical body 30, by any suitable means such as by gluing the same therein. It is to be particularly noted that each group of bristles extends outwardly from the periphery of the frustro-conical body 30 at an acute angle relative to the longitudinal axis of the frustroconical body 30 and extends towards the smaller of the two ends of the frustro-conical or tapered body 30.

Now, upon the yarn being severed or broken between the delivery roll 15 and the corresponding bobbin 21, the yarn end, which normally extends at an angle in its course from the delivery roll 15 to the yarn guide 20, will swing downwardly and inwardly or rearwardly and will thus be ensnared by the bristles 31, due to the fact that these bristles extend at an angle relative to the longitudinal axis of the tapered or frustro-conical body 30. This not only insures that the yarn end is ensnared by the bristles, but also insures that the yarn end will cling to the scavenger roll and rotation of the scavenger roll will cause the yarn to be wrapped therearound until the yarn end is discovered by the operator and again passed through the corresponding yarn guide 20 and to the bobbin 21.

The tapered frustro-conical body 30 and the angular relation of the groups of bristles 31 facilitate ease in removing the portion of the yarn or strand which has been wound thereon.

It is thus seen that we have provided an improved scavenger roll for spinning frames and the like wherein circularly spaced rows of angularly disposed bristles are provided which insure that the yarn is ensnared by the scavenger roll upon being broken and from which the Patented Dec. 28, 1954 yarn wound thereon may be readily removed by rolling or sliding the convolutions of yarn off the smaller end of the frustro-conical body 30.

In the drawings and specification there has been set forth a preferred embodiment of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined in the claims.

We claim:

1. In a yarn forming machine, such as a spinning frame or the like, having cooperating driven drawing rolls thereon and having means spaced therefrom for taking up yarn extending from the drawing rolls and having a driven scavenger roll shaft disposed adjacent the path of travel of the yarn from the drawing rolls to the take-up means, the combination of an improved scavenger roll comprising a frustro-conical body fixed on said scavenger roll shaft, and said frustro-conical body having a plurality of substantially longitudinally extending rows of spaced groups P of bristles spaced around the periphery thereof for ensnaring and taking up the yarn upon the yarn being broken.

2. In a yarn forming machine, such as a spinning frame or the like, having cooperating driven drawing rolls thereon and having means spaced therefrom for taking up yarn extending from the drawing rolls and having a driven scavenger roll shaft disposed adjacent the path of travel of the yarn from the drawing rolls to the take-up means, the combination of an improved scavenger roll comprising a frustro-conical body fixed on said scavenger roll shaft, a plurality of groups of bristles spaced about the periphery of said body, each of said groups of bristles extending outwardly from said body at an acute angle relative to the longitudinal axis of the body, and the free ends of the bristles extending towards the smaller end of the frustro-conical body.

3. In a yarn forming machine, such as a spinning frame or the like, having cooperating driven drawing rolls thereon and having means spaced therefrom for taking up yarn extending from the drawing rolls and having a driven scavenger roll shaft disposed adjacent the path of travel of the yarn from the drawing rolls to the take-up means, the combination of an improved scavenger roll comprising a frustro-conical body fixed on said scavenger roll shaft, and a plurality of rows of bristles spaced around the periphery of said body for ensnaring and taking up the yarn upon the yarn being broken, said bristles extending outwardly from the body and having their free ends disposed nearer the smaller end of the body than their base portions.

4. In a yarn forming machine, such as a spinning frame or the like, having cooperating driven drawing rolls thereon and having means spaced therefrom for taking up yarn extending from the drawing rolls and having a driven scavenger roll shaft disposed adjacent the path of travel of the yarn from the drawing rolls to the take-up means, the combination of an improved scavenger roll comprising a frustro-conical body fixed on said scavenger roll shaft, and a plurality of substantially longitudinally extending rows of spaced groups of pliable bristles projecting from the periphery of the body at an acute angle relative to the smaller end and the axis of said body for ensnaring and taking up the yarn upon the yarn being broken, the free ends of the bristles being nearer the smaller end of the body than their point of attachment to the body.

5. A scavenger roll for a yarn forming machine disposed on a driven shaft at a point adjacent the normal path of travel of a moving strand, said scavenger roll comprising a frustro-conical body, and a plurality of spaced groups of pliable bristles projecting outwardly from the periphery of said body for ensnaring and taking up the strand upon the strand being broken.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 649,397 Burgess May 8, 1900 1,774,372 Hendrickson Aug. 26, 1930 FOREIGN PATENTS Number Country Date 971 Great Britain Jan. 22, 1886 158,617 Great Britain Feb. 3, 1921 499,565 Germany June 10, 1930 

